Inkjet Printing of TiO 2 Photoelectrodes and Manufacturing of Large-Area Dye-sensitized Solar Cell (DSSC) Modules

In this study, a nanomaterial printer (Dimatix, DMP-2800) was used to inkjet-print titanium dioxide (TiO 2 ) for construction of a large area of photoelectrode pattern. The inkjet printing technology exhibits many advantages including mask-less (digital) construction of film patterns and fine control (drop-on-demand) of film thickness. The TiO 2 photoelectrode was eventually formed with a nanoporous structure of particle size of $40 \sim60$ nm after sintering at 450°C, largely increasing adsorption of the dye N719. It was dyed and bonded with a platinum (Pt) counter electrodeto produce a large-area dye-sensitized solar cell (DSSC) module, yielding a maximum power conversion efficiency of 1.91%.